Canada is drawing up plans for extensive tariffs against US products if Donald Trump follows through on his threat to put 25% levies on Canadian goods, according to people familiar with the matter.

Trump has threatened a tariff on goods from Canada if the country does not clamp down on immigration and the flow of drugs across its border with the U.S.

A senior official says Canada is looking at putting retaliatory tariffs on American orange juice, sinks, toilets and some steel products if U.S.